File:Stage7-sem4.jpg

From Embryology

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Human Embryo Carnegie stage 7

17 days, pre-somite, scanning electron micrograph image

Embryonic disc (epiblast/ectoderm layer) dorsolateral view, with amniotic membrane partially removed.

Primitive node (Henson's node) in centre of disc and primitive streak, shown as indentation in disc is extending to the left. Connecting stalk to the left.

Scale bar 100 microns

See also: Stage7-sem5.jpg selected region of primitive streak | Stage7-sem3.jpg original image not cropped.

Image Source: Scanning electron micrographs of the Carnegie stages of the early human embryos are reproduced with the permission of Prof Kathy Sulik, from embryos collected by Dr. Vekemans and Tania Attié-Bitach. Images are for educational purposes only and cannot be reproduced electronically or in writing without permission.

Embryonic Development

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current14:31, 21 August 2009Thumbnail for version as of 14:31, 21 August 2009937 × 595 (79 KB)MarkHill (talk | contribs)Human Embryo Carnegie stage 7, 17 days, pre-somite, scanning electron micrograph image Embryonic disc (epiblast/ectoderm layer) dorsolateral view, with amniotic membrane partially removed. Primitive node (Henson's node) in centre of disc and primitive